Unplasticized polyvnyl chloride fitting for water supply 给水用硬聚氯乙烯管件
2.
Unplasticized polyvinyl chloride fittings for chemical industry 化工用硬聚氯乙烯管件
3.
Unplasticized polyvinyl chloride fittings for drainage in buildings 建筑排水用硬聚氯乙烯管件
4.
Technical specification for pvc - u pipeline engineering for water supply in buildings 建筑给水硬聚氯乙烯管管道工程技术规程
5.
Technical parameters and requirements of plastic pipe for sprinkler irrigation . hard polyvinyl chloride pipe 喷灌用塑料管基本参数及技术条件.硬聚氯乙烯管
6.
Technical specification for unplasticized polyvinyl chloride double - wall noise - reducing pipeline engineering of water sewerage in buildings 建筑排水中空壁消音硬聚氯乙烯管管道工程技术规程
